XML 76 R41.htm IDEA: XBRL DOCUMENT v2.4.1.9
Property and equipment (Details) (CAD)
Dec. 31, 2014
Dec. 31, 2013
Gross property and equipment 2,676,230us-gaap_PropertyPlantAndEquipmentGross 2,634,423us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation, amortization and impairment (2,438,766)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (2,371,605)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Net property and equipment 237,464us-gaap_PropertyPlantAndEquipmentNet 262,818us-gaap_PropertyPlantAndEquipmentNet
Survey equipment    
Gross property and equipment 643,319us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= NSFDF_SurveyEquipmentMember		 626,286us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= NSFDF_SurveyEquipmentMember
Furniture and other equipment    
Gross property and equipment 528,420us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember		 528,420us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_FurnitureAndFixturesMember
Computers and software    
Gross property and equipment 1,100,593us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= NSFDF_ComputersAndSoftwareMember		 1,097,560us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= NSFDF_ComputersAndSoftwareMember
Leasehold improvements    
Gross property and equipment 403,898us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdsAndLeaseholdImprovementsMember		 382,157us-gaap_PropertyPlantAndEquipmentGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_LeaseholdsAndLeaseholdImprovementsMember